如何在我的页面上显示 Rss

Question

我已经使用下面的代码（aspx.cs）创建了 xml 文件，现在我正在尝试使用 xslt 和文字控件在我的页面上显示 xml 文件（查看我的 aspx）

• aspx:

                  <asp:Literal ID="RssHtml" runat="server" />
  

• aspx.cs:

  使用系统； 使用 System.Collections.Generic； 使用 System.Linq； 使用 System.Web； 使用 System.Web.UI； 使用 System.Web.UI.WebControls； 使用 System.Data.SqlClient； 使用 System.Xml； 使用 System.Text； 使用 System.Configuration； 使用 System.IO； 使用 System.Xml.Xsl;

  公共部分类 Rss：System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) {

  Response.Clear();
  Response.ContentType = "application/rss+xml";
  XmlTextWriter objX = new XmlTextWriter(Server.MapPath("App_Code/RssDef.xml"), Encoding.UTF8);
  objX.WriteStartDocument();
  objX.WriteStartElement("rss");
  objX.WriteAttributeString("version", "2.0");
  objX.WriteStartElement("channel");
  
  SqlCommand cmd = new SqlCommand("Select * from RssFeeds", new SqlConnection(ConfigurationManager.ConnectionStrings["igroup13_test1ConnectionString"].ConnectionString));
  cmd.Connection.Open();
  SqlDataReader dr = cmd.ExecuteReader();
  
  objX.WriteElementString("title", "RSS.....");
  objX.WriteElementString("link", "");
  objX.WriteElementString("description", "desc");
  objX.WriteElementString("language", "en-us");
  objX.WriteElementString("ttl", "60");
  objX.WriteElementString("lastBuildDate", String.Format("{0:R}", DateTime.Now));
  
  while (dr.Read())
  {
      objX.WriteStartElement("item");
      objX.WriteElementString("title", dr["title"].ToString());
      objX.WriteElementString("link", "");
      objX.WriteElementString("description", dr["description"].ToString());
      objX.WriteElementString("pubDate", String.Format("{0:R}", dr["publishDate"]));
      objX.WriteEndElement();
      //objX.WriteEndElement();
  }
  
  objX.WriteEndElement();
  objX.WriteEndElement();
  objX.WriteEndDocument();
  objX.Flush();
  objX.Close();
  Response.End();
  
  
  #region load the XML file
  // Use my local XML file (that I've created)
  String strXmlSrc = Server.MapPath("~/App_Code/RssDef.xml");
  
  //  Load the XML file into the XmlDocument object.
  XmlDocument myXmlDoc = new XmlDocument();
  try
  {
      myXmlDoc.Load(strXmlSrc);
  }
  catch (Exception ex)
  {
      Response.Write("error in loading XML document " + ex.Message);
      return;
  }
  #endregion
  
  #region load the XSLT file
  //  Load our XSL file into the Xsl Transform object.
  String strXslFile = Server.MapPath("~/App_Data/Def.xslt");
  XslCompiledTransform myXslDoc = new XslCompiledTransform(true);
  try
  {
      myXslDoc.Load(strXslFile);
  }
  catch (Exception ex)
  {
      Response.Write("error in loading XSLT document " + ex.Message);
      return;
  }
  #endregion
  
  #region Transform the XML into XHTML
  //  Create a StringBuilder and then point a StringWriter at it.
  //  I'm using this to hold the HTML output by the Transform method
  StringBuilder myStringBuilder = new StringBuilder();
  StringWriter myStringWriter = new StringWriter(myStringBuilder);
  
  try
  {
      myXslDoc.Transform(myXmlDoc, null, myStringWriter);
  }
  catch (Exception ex)
  {
      Response.Write("error in transforming the document " + ex.Message);
      return;
  }
  #endregion
  
  #region Write to the HTML Page
  //  Take theresulting HTML and display it via an ASP.NET
  //  literal control.
  RssHtml.Text = myStringBuilder.ToString();
  #endregion
  
  
  }
  

  }

• xslt:

<xsl:for-each select="rss/channel">
  <h2>
    <a href="{link}">
      <xsl:value-of select="title" />        
    </a>

  </h2>
  <h4>
    <xsl:value-of select="description"/>
  </h4>
</xsl:for-each>

<ul>
  <xsl:for-each select="rss/channel/item">
    <li>
      <a href="{link}">
        <strong>
          <xsl:value-of select="title" />

        </strong>
      </a>

    </li>

    <xsl:value-of select="descreption"/>
    <br/>
    <xsl:value-of select="pubDate"/>

  </xsl:for-each>
</ul>

我做错了什么？

Answer 1

我认为错误理解 Response.End() 调用“将所有当前缓冲的输出发送到客户端，停止执行页面，并引发 EndRequest 事件。”

Msdn link to Respons.End description

您应该从代码 sn-p 中删除该行